/Engine/Plugins/Online/OnlineServices/Source/OnlineServicesCommon/Public/Online/SocialCommon.h
void BroadcastRelationshipUpdated ( [FAccountId](API\Runtime\CoreOnline\Online\FAccountId) LocalAccountId, [FAccountId](API\Runtime\CoreOnline\Online\FAccountId) RemoteAccountId, [ERelationship](API\Plugins\OnlineServicesInterface\Online\UE__Online__ERelationship) OldRelationship, [ERelationship](API\Plugins\OnlineServicesInterface\Online\UE__Online__ERelationship) NewRelationship )